منابع مشابه
De Sitter Special Relativity
A special relativity based on the de Sitter group is introduced. Like ordinary special relativity, it retains the quotient character of spacetime, and consequently a notion of homogeneity. This means that the underlying spacetime will be a de Sitter spacetime, the quotient space between de Sitter and the Lorentz groups. Since the local symmetry will also be given by the de Sitter group, each ta...
متن کاملDe Sitter Special Relativity: Effects on Cosmology
The main consequences of de Sitter Special Relativity to the Standard Model of Physical Cosmology are examined. The cosmological constant Λ appears, in this theory, as a manifestation of the proper conformal current, which must be added to the usual energy–momentum density. As that conformal current itself vanishes in absence of sources, Λ is ultimately dependent on the matter content, and can ...
متن کامل2 00 3 Doubly Special Relativity and de Sitter space
In this paper we recall the construction of Doubly Special Relativity (DSR) as a theory with energy-momentum space being the four dimensional de Sitter space. Then the bases of the DSR theory can be understood as different coordinate systems on this space. We investigate the emerging geometrical picture of Doubly Special Relativity by presenting the basis independent features of DSR that includ...
متن کاملVery Special Relativity and TGD
One might think that Poincare symmetry is something thoroughly understood but the Very Special Relativity [1] proposed by nobelist Sheldon Glashow and Andrew Cohen suggests that this might belief might be wrong. Glashow and Cohen propose that instead of Poincare group, call it P , some subgroup of P might be physically more relevant than the whole P . To not lose four-momentum one must assume t...
متن کاملDe Sitter Relativity and Cosmological Principle
The formalism of Fantappié-Arcidiacono Projective General Relativity –also known as De Sitter Relativityhas recently been revised in order to make possible cosmological models with expansion, similarly to ordinary Friedmann cosmology formulated within the context of General Relativity. In this article, several consequences of interest in the current cosmological debate are examined and discusse...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2008
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.77.127702